Are these constant voltage drivers?

I do believe they are but I am not an electrician so I can only comment on what I read and perceived them to be

Can you use with led light which come in rolls

Not for the whole roll only small parts ie 300mm or so

Two green inputs, two red inputs. No diagram. Which input is which for the 240v in and which for LED out?

It is clearly marked on the case ! AC 240v in on the right, 12 DC out on the left.

How do i fit these led transformers to the live feed to the light> i have halogen transformers which came with cables fitted. d

Pull out Fuse or turn OFF circuit trip switch so you are safe. See if you can simply undo cable terminals of existing transformer and simply replace with new LED driver. If not cut cables both sides and strip insulation etc. to connect a) mains side to Primary AC 240v and b) lamp holder side to Secondary 12v DC change lamps, put on covers etc and you are done. Replace Fuse/ trip back ON. Bingo 😊

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LOWENERGIE LED Driver Power Supply Transformer, 12w 240V - DC 12V, for Light Strips, LED Bulbs and Ring Doorbell (3)

LOWENERGIE LED Driver Power Supply Transformer, 12w 240V - DC 12V, for Light Strips, LED Bulbs and Ring Doorbell (3)

Product ID: 67691407

Details

Brand
LOWENERGIE
Current rating
1 Amps
Mounting type
Wall Mount
Power source
Mains current
Product dimensions
20D x 41W x

⚡12W max power output

🔌100-240V AC input range

🛡️Built-in multi-layer safety protection

¥6387

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Description

💡 Power your space smartly, safely, and stylishly with LOWENERGIE!

ENERGY SMART UPGRADE - Low static power consumption cuts energy costs while powering your modern lighting needs.
SAFETY FIRST ALWAYS - Advanced circuitry guards against overcurrent, overvoltage, thermal overload, and short circuits.
PLUG PLAY SIMPLICITY - Compact, lightweight design fits effortlessly behind cabinets or fixtures for seamless installation.
POWER PACKED PRECISION - Stable 12V DC output ensures flawless LED performance without flicker or delay.
VERSATILE COMPATIBILITY - Perfect for LED strips, bulbs, and smart doorbells—upgrade your space with confidence.

The LOWENERGIE LED Driver Power Supply Transformer delivers a reliable 12W, 12V DC output from a wide 100-240V AC input, designed specifically for low-voltage LED lighting and compatible doorbell systems. Its compact form factor and advanced safety features make it ideal for discreet installation in tight spaces, ensuring flicker-free, energy-efficient operation with robust protection against electrical faults.

Specifications

ASIN	B07D18VM9J
Best Sellers Rank	11,764 in Lighting ( See Top 100 in Lighting ) 84 in Low-Voltage Transformers
Brand	LOWENERGIE
Current Rating	1 Amps
Customer Reviews	4.5 4.5 out of 5 stars (1,688)
Included Components	LED Driver
Item Dimensions D x W x H	20D x 41W x 20H millimetres
Manufacturer	Lowenergie
Manufacturer Part Number	12-3
Maximum Frequency	60 Hz
Minimum Frequency	50 Hz
Model Number	12-3
Mounting Type	Wall Mount
Number of Items	3
Number of Packs	1
Power Source	Mains current (AC)
Specification Met	CE
UPC	711639501539

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¥6387

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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